Operator SQ3PMM travels across Africa and uses various call signs (CN2MM, 9G5AG, 5V7MI, TY4AB, 9X9MM). He does not have QSL cards, but is willing to confirm QSOs by sending a post card. I received one from Rwanda (9X9MM) yesterday. I scanned both sides of it and emailed it to my local QSL checker who says "Looks good to me based on what the DXCC confirmation criteria are.".
73 Marvin VE3VEE